Seed phosphorus remobilization is not a major limiting step for phosphorus nutrition during early growth of maize

Nadeem, Muhammad; Mollier, Alain; Morel, Christian; Vives, Alain; Prud’homme, Loïc; Pellerin, Sylvain

doi:10.1002/jpln.201200369

Cited by 10 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The success or failure of the early growth stage of developing seedlings is directly related to successful remobilization of stored grain P reserves that were accumulated throughout the ripening period (Guardiola & Sutcliffe, 1971;Le Deunff, 1975;Lawrence et al, 1990;Leonova et al, 2010;Nadeem et al, 2011Nadeem et al, , 2012a. As the hydrolysis of grain P during germination is a major source of inorganic P to support the growing seedlings during early growth stages (Nadeem et al, 2011;2012b) therefore the present study was conducted to investigate the role of P nutrition to the parent plant on the dry weight and P reserves accumulation in maize grains for better selection of seeds.…”

Section: Introductionmentioning

confidence: 99%

Short Communication. Effect of phosphorus nutrition and grain position within maize cob on grain phosphorus accumulation

Nadeem

Mollier

Vives

et al. 2014

Span. j. agric. res.

Self Cite

View full text Add to dashboard Cite

Nutritional status of grains may vary due to external nutrient supply and their position within parent maize cob. Phosphorus (P) is the least mobile nutrient in the soil and therefore newly growing seedlings are largely dependent on the stored grain P contents which are accumulated during the crop maturity period. Objective of this study was to access the effects of different P applications and grain positions on P and dry matter contents in grains. Phosphorus application and grain position has significant (p<0.05) effects on P contents in grains whereas dry weight and P content are highly correlated. Grain weight and P contents decreased linearly from base to apical position possibly due to flow of nutrients from base towards apical position within cob. Significantly higher grain dry weight (0.35±0.01 g) and P contents (962±57 µg P) are recorded in high P application (92.50 kg ha-1) rate on base position whereas minimum grain dry weight (0.14±0.01 g) and P contents (219±11 µg P) were recorded on apical grain position in low P application (5.60 kg ha-1) rate. The results suggest that for better seedling P nutrition especially in soils of low inherent P, maize grains should be selected from base or middle position where maximum dry weight and P contents are concentrated to support the seedlings to reach at growth at which roots are capable of external P uptake.

show abstract

Section: Introductionmentioning

confidence: 99%

Short Communication. Effect of phosphorus nutrition and grain position within maize cob on grain phosphorus accumulation

Nadeem

Mollier

Vives

et al. 2014

Span. j. agric. res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Earlier studies on maize showed that seed C reserves are largely concentrated in the endosperm rather than in the scutellum (Deleens et al , 1984; Bathellier et al , 2007; Nadeem et al , 2011, 2012a). The role of seed C remobilization and the redistribution of metabolites have been thoroughly studied by many researchers (Bedi et al , 2009; Nadeem et al , 2011, 2012a, b). Evidence of the succession of heterotrophic to autotrophic carbon metabolism in newly growing maize seedlings has been reported in earlier studies (Cooper and MacDonald, 1970; Deleens et al , 1984).…”

Section: Introductionmentioning

confidence: 99%

“…Soon after imbibition, the activity of phytase ( myo -inositol hexakisphosphate phosphohydrolase) starts to hydrolyse ins P 6 (Laboure et al , 1993; Steiner et al , 2007), which, in turn, triggers the cleavage of one or more phosphate groups. Ins P 6 is converted into non-phytate P and remobilized to the growing seedling (Nadeem et al , 2012b). The transition from the P-heterotrophic phase to self-nutrition by external P uptake during early growth stages is important as it has long-term effects on final crop yield.…”

Section: Introductionmentioning

confidence: 99%

“…Although our knowledge of the supply of nutrients from the maize seed reserve to the developing seedlings is substantial (Bourdu and Gregory, 1983; Deleens et al , 1984; Bityutskii et al , 2002; Wang et al , 2005; Mei and Song, 2008; Nadeem et al , 2011, 2012a, b; White and Veneklaas, 2012), not much quantitative knowledge is available about the seed reserves and assimilation-derived P for root and shoot development during heterotrophic and autotrophic phases of maize seedlings. The objective of the current research was to: (1) evaluate the time frame of the origin of P utilized in maize seedlings, including heterotrophic, transitional and autotrophic phases; and (2) compare P and C dynamics in both seed and seedling compartments during the same phases.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Remobilization of seed phosphorus reserves and their role in attaining phosphorus autotrophy in maize (Zea maysL.) seedlings

et al. 2014

Self Cite

View full text Add to dashboard Cite

Successful remobilization of seed reserves is the driving force behind seedling establishment for maximum final crop outcomes. The remobilization of stored maize seed phosphorus (P), and its allocation towards growing seedlings is critical for P-autotrophy during early ontogeny. We aimed to (1) evaluate the time frame of the origin of P utilized by maize seedlings, including the heterotrophic, transitional and autotrophic phases; and (2) compare P and carbon (C) dynamics in both seed and seedling compartments during the same phases. Using isotopic signatures (32P), we identified different P fluxes (P-heterotrophy, P-transition and P-autotrophy) and determined the proportion of P fluxes from heterotrophic seed P and external P uptake during 23 d of early ontogeny. The P-heterotrophic growth phase lasted from the first to the fourth day after sowing, when seedlings were entirely made up of heterotrophic P originating from remobilized seed P pool. In our experimental conditions, the P-transitional phase, when growing seedlings were supported by both heterotrophic and autotrophic P, lasted from the fifth to the fifteenth day after sowing. Thereafter, seed P reserves were exhausted and seedlings depended entirely on external P uptake, indicating the P-autotrophic stage. Although seed P reserves were remobilized earlier than C reserves, the length of the three growth phases for P and C was similar in the maize seedlings.

show abstract

“…Therefore, Rose et al (2012) compared high P and low P containing rice seeds from several genotypes and detected genotype-specific responses but no reduction in seedling vigour, biomass and grain yields at maturity of plants. Nadeem et al (2012) confirmed for corn, that P was not a limiting factor for seedling P nutrition during the first four weeks of early growth because of phytate hydrolysis and remobilisation of nonphytate P. Rose et al (2012) suggested the need for research to define the minimum P levels in seeds required for adequate seedling growth across a range of environments.…”

Section: Variability Between Cultivars and Genotypesmentioning

confidence: 88%

Variability of P Uptake by Plants

Panten

Godlinski

Schroetter

et al. 2016

Phosphorus in Agriculture: 100 % Zero

View full text Add to dashboard Cite

Phosphorus (P) uptake affects the planning of P fertilisation of agricultural crops and subsequently the economic evaluation of farming practices and the quantification of agri-environmental burdens. The P uptake of plants is influenced by soil type, soil available P, availability of other essential nutrients, climate and weather conditions as well as by the nutrient use efficiency of the grown cultivar. Phosphorus coefficients are mainly derived from P fertiliser experiments, reflecting regional soil and weather conditions as well as farming practice. P coefficients commonly used for a single crop can vary substantially and hence rarely reflect the actual P uptake rates of crops. However, the main driving factor in P budgets is the yield level rather than the P concentration in plants. While it is difficult to determine a 'correct' P coefficient for all crops from which to calculate reliable agri-environmental indicators, it is important for farmers to be able to calculate their nutrient budgets as accurately as possible to avoid economic losses and environmental burdens.

show abstract

Seed phosphorus remobilization is not a major limiting step for phosphorus nutrition during early growth of maize

Cited by 10 publications

References 24 publications

Short Communication. Effect of phosphorus nutrition and grain position within maize cob on grain phosphorus accumulation

Short Communication. Effect of phosphorus nutrition and grain position within maize cob on grain phosphorus accumulation

Remobilization of seed phosphorus reserves and their role in attaining phosphorus autotrophy in maize (Zea maysL.) seedlings

Variability of P Uptake by Plants

Contact Info

Product

Resources

About